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Lecture notes Biological molecules New A-Level Biology for AQA: Year 1 & 2 Student Book with On

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This document provides in depth, organised, and simple of 1.1 to 1.4 part of the topic of biological molecules that are understandable and organised

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,Biological molecules:
WHAT ARE SOME BIOLOGICAL MOLECULES?
Carbohydrates
Fats(lipids)
Proteins
Dna
They all have carbon in common oxygen and hydrogen


WHAT IS COVALENT BONDING?
A type of bond where 2 attoms share one or more pair of electrons


WHAT IS AN IONIC BOND?
A type of bond that is formed when one ion is transferred from one attom to the other


WHAT IS HYDROGEN BONDING?
when a molecule is pulling electrons towards it so it becomes negative and the rest of the
elements lose their electrons to it it becomes positive


5
..... st




เดน S … … … … …

st
weak electrostatic
o ㆁ




H
Λ

bond

, WHAT IS A PLOLAR MOLECULE?
A molecule with a negative end and a positive end
WHAT IS A MONOMER? A smaller unit which larger molecules are made up of


WHAT ARE POLYMERS?
Chains of monomers formed by polymerisation


WHAT IS POLYMERISATION?
A chain of glucose can be turned to startch and chemical bonds are formed this prosses is
called polymerisation


ONE GLUCOSE MOLECULE IS CALLED MONOMER WHEN IT BECOMES A POLYMER IT
DOES NOT DISOLVE IN WATER


WHAT IS THE LATIN NAME FOR GLUCOSE: saccharides (sugar)
1 GLUCOSE IS A : saccharide
2 GLUCOSE IS A :disaccharide
2 AND MORE IS A: polysaccharide(startch)


condensation reaction
Polyneucleotides is many neucleotides so like dna
0

⑨ cose
② ) H 20
sucrose




TO BREAK A BOND WE ADD WATER THIS IS CALLED HYDROLYSIS
CONSISTENT PARTS =original parts
METABOLISM: all the chemical reactions happening inside the bodies

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Publisher: Unknown ISBN: 9781782943143 Edition: 1

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